Device and method for positioning an electrode in a body cavity
First Claim
1. An electrical sensing/stimulation apparatus for positioning at least one electrode within body tissue, the electrical sensing/stimulation apparatus comprising:
- an elongate lead body having a longitudinal axis;
at least one sensing/stimulation electrode coupled to the elongate lead body;
a deployable/retractable displacement member coupled to the elongate lead body and adapted to move or bias the at least one electrode towards a prescribed direction by a user; and
a tissue attachment mechanism adapted to affix a distal segment of the elongate lead body to body tissue, the tissue attachment mechanism having a retracted configuration and a deployed configuration,wherein in the retracted configuration the tissue attachment mechanism is positioned substantially within the at least one internal lumen, and in the deployed configuration the tissue attachment mechanism extends from the longitudinal axis of the elongate lead body to engage body tissue, andwherein the tissue attachment mechanism comprises a plurality of tissue attachment members adapted to extend from a common port of the elongate lead body, andwherein two or more of the tissue attachment members of the plurality of tissue attachment members are adapted to diverge from one another when extended from the common port.
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Abstract
Electrical sensing/stimulation apparatuses for positioning at least one electrode within body tissue are provided. An electrical sensing/stimulation apparatus may comprise an elongate lead body having at least one internal lumen, at least one sensing/stimulation electrode, a deployable/retractable displacement member that moves or biases at least one electrode towards a prescribed direction by the user, a tissue attachment mechanism for affixing the distal segment of the device to body tissue, and an atraumatic distal lead body termination. In a retracted configuration, the attachment mechanism is positioned substantially within the distal segment of the lead body, and in the deployed configuration, the attachment mechanism extends from the axis of the lead body to engage body tissue.
75 Citations
42 Claims
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1. An electrical sensing/stimulation apparatus for positioning at least one electrode within body tissue, the electrical sensing/stimulation apparatus comprising:
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an elongate lead body having a longitudinal axis; at least one sensing/stimulation electrode coupled to the elongate lead body; a deployable/retractable displacement member coupled to the elongate lead body and adapted to move or bias the at least one electrode towards a prescribed direction by a user; and a tissue attachment mechanism adapted to affix a distal segment of the elongate lead body to body tissue, the tissue attachment mechanism having a retracted configuration and a deployed configuration, wherein in the retracted configuration the tissue attachment mechanism is positioned substantially within the at least one internal lumen, and in the deployed configuration the tissue attachment mechanism extends from the longitudinal axis of the elongate lead body to engage body tissue, and wherein the tissue attachment mechanism comprises a plurality of tissue attachment members adapted to extend from a common port of the elongate lead body, and wherein two or more of the tissue attachment members of the plurality of tissue attachment members are adapted to diverge from one another when extended from the common port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method for positioning an electrical sensing/stimulation device within body tissue, the method comprising:
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advancing an elongate lead body of the electrical sensing/stimulation device to position the elongate lead body at a target site in a bodily cavity; torqueing the elongate lead body to align at least one tissue attachment member of the electrical sensing/stimulation device with a target tissue in the target site; deploying a displacement member to bias the elongate lead body and the at least one tissue attachment member against the target tissue; and actuating the at least one tissue attachment member to extend from at least one tissue anchor deployment port on the elongate lead body and into the target tissue to affix a distal portion of the elongate lead body and at least one electrode of the electrical sensing/stimulation device to the target tissue, wherein the at least one tissue attachment member comprises a plurality of tissue attachment members, and wherein actuating the at least one tissue attachment member to extend from the at least one tissue deployment port comprises actuating the plurality of tissue attachment members to extend from a common tissue deployment port, and wherein two or more attachment members diverge from one another when deployed from the common tissue deployment port. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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Specification